Spark-plug.



E. SANTSGHE.

SPARK PLUG. APPLICATION FILED MAY 4.1908.

Patented Mar. 16, 1909.

INVENTOR.

WITNESSES- its own axis.

UNITED STA PATENT OFFICE.

EM IL SANTSCHE. ()l" EUREKA, (IAl lltrllNl/L SPARK-PLUG.

Specification of Letters Patent. Application filed May 4, 1908. Serial .No. 139,680.

No. 915,485. Patented March 16, 1909.

housingphne the contact 6 is carried around until one of its bevel feces reaches and lie upon the adjacent bevel face of the contort of rho fixed electrode. This juxtaposition of [he two contacts is complete and miendml. owing to the eccentric location, i'e'lntivvlv to (lie shall '1, 0f the in 5 which (warri r 1hr conflict 53. Continue rotation of the shaft 4. now muses the contact 6 to yield und r llw pressure. mid contact turning with To all whom it may concern." c. it known that l. EMU. SAN'rsouir, u citi l zen of the United States, residing at l lurcku, 4 in the county of Humboldt end Stale of (:dil fornia, have invented certain new and useful Improvements in S}):i1'llflilgs, of which tinfol owing is a specification My invention relates to that class of spur-k plu s for explosive engines in which Llil cli-c troce contacts brush past each other; and, particularly, to those devices of this general the pin 5, against the influence of the sprin 1l);and, on iircounl of the eccentricity o sail type in which one of the electrodes is fixed and the other is rotatable.

The object of my invention is to provide fora. peculiarly effective wiping contact of the l l l pin, and he yielding: of the contact, the latl elec modes; and t o this end my invention 0on l l l l l ter wipes its fur-c, with accuracy anda'clative deliberation, over the face of the contact 3, and leaves said contact only after the shaft 4 has made. 2L considerable arc of its rotary movement, so that the spring 10 is then under maximum tension. with the result that the parting of the two contacts is beneficially quick. it will thus be that the meetin of the two contacts is gentle, their time and character of mutual hearing are extended and intimate, resulting in a. perfect wiping action, and their separation is sudden and complete, These results to be sought, not only, for the reduction of frictional wear and Best contact and release sists in the novel construction, arrangement and combination of )arts which I shall now fully describe, by-re 'crence to the RCCOIHIHL- nying drawings in \VlJlCl1-- Figure 1 is a rear-end elevation, partly broken, of my spark-plug. Fig. 2 is a. plan view of the same Fig. 3 is a front elevation of the some.

1 is the body of the device, consisting of a suitable plate. In this body is mounted the fixed electrode 2, suitably insulated there from. The inner end of the electrode 2 can tear, but also, for tinries a contact 3 with a beveled end. of electrodes in devices of th s character. Rotatab'ly mounted in the body 1 a shaft lli vmg 1 bus described my invention, what i l l chum as new and desire to secure by Let- I tcrs Patent isz-- l. In a sparking plug, the combination of a base piste, a. fixed electrode mounted in the base plate and insulated therefrom, an offset contact with'n bevcled'cnd on said electrode below the lH'tSO plate, an elongated rorntublo shaft projecting upwardly from said plate, cup-shaped plateiixed to the projecting end of the shaft and having an annular gem. on its outer surface whereby rotary movement now be imported to the 4-, through which posses a pin 5 eccentric to the axis of l e mail, said shaft being so mounted that it inay'hove an oscillation on The inner end of the pin 5 carries a bevel-ended contact 6.

T0 the outer end of the rotatable shaft 4 is I fixed a housing-plate 7, which may represent part of the power-transmission by which the shaft is rotated. In the present case, .i show said plate as a gear, provided with on into-- rior control chamber, 7, said plate having a. substantially cup she formation. Into this housing-plate 7, t c oscillatory pin 5 cup-shaped plate mid the connected shaft, projects, and has secured to its end a short a pin exteni ng longitudinally through the crank 8 carrying an arm 9 to which one end shaft at a point eccentric to the fl-XIS of the shaft for independent rocking m0veinent, the lower end of the pin projecting through the base plate and having an offset contact with beveled faces constructed and arranged to sweepthe contact of the fixed electrode, the upper end of the pin pro ecting w1 thm the housing plate. a crank on said projecting end of the pin, on arm on the crank, a spring secured to the arm, connecting means for the opposite end of the spring, and a cap plate of a spring 10 is secured. The other end of the spring is secured to it fixed lug 11 in the plate. A cap 12 on the plate, houses in these parts. The spring 10 s so arran ed as to permit the pin 5 to oscillate in cit I :r direction, so that no injury can result to its contact 6. A

The 0 oration is as follows :-llie electrode shaft 4 lieing rotated by suitable means, as, for example, by power applied to the toothed .AHFIGNUR i l 'l'l-Illl ll l-l'llGll'l'ldS 'l'U JOHN A.

for inclosing the parts within the housing plate.

2. In a spark-plug, the combination of a bod a fixed electrode-contact carried by sai body; an electrode shaft rotatably mounted in said body; a chambered housingplate secured to and adapted to transmit rotary movement to said shaft; as oscillatory pin mounted in said shaft and carrying a contact disposed to wipe the fixed electrodes-contact, said pin rejecting into the chamber of the housing-p ate; and a spring in the chamber of the housing-plate connected with said pin to control its oscillation.

3. In a spark-plug, the combination of a body; a. fixed electrode-contact carried by said body; an electrode shaft rotatably mounted in said body; a chambered housing plate secured to and adapted to transmit rotary movement to said shaft; an oscillatory pin mounted in said shaft eccentric to its axis and carrying a contact disposed to wipe the fixed electrode-contact, said pin pro'ecting into the chamber of the housing-p ate; and a spring in said chamber of the housingplate connected with said pin to control its oscillation.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

EMIL SANTSCHE. Witnesses:

B. l. PORTER, J12, EDWARD FAUTZ. 

